Solar Panel Output Calculator USA
Introduction & Importance
Solar panel output calculators like ours help you estimate the energy production of your solar panel system in the USA. This is crucial for understanding your potential savings and environmental impact.
How to Use This Calculator
- Enter your system size in kilowatts (kW).
- Input your solar irradiation in kilowatt-hours per square meter per day (kWh/m²/day).
- Specify your array efficiency in percentage (%).
- Click ‘Calculate’.
Formula & Methodology
Our calculator uses the following formula:
Annual Energy Yield (kWh/year) = System Size (kW) * Solar Irradiation (kWh/m²/day) * Array Efficiency (%)
Real-World Examples
Example 1: Residential System
A 5kW system in Phoenix, AZ (6.1 kWh/m²/day) with 17% efficient panels produces approximately 21,950 kWh/year.
Example 2: Commercial System
A 100kW system in San Diego, CA (5.2 kWh/m²/day) with 18% efficient panels produces approximately 936,000 kWh/year.
Example 3: Utility-Scale System
A 100MW system in Las Vegas, NV (6.7 kWh/m²/day) with 19% efficient panels produces approximately 67,000,000 kWh/year.
Data & Statistics
| City | Average Irradiation (kWh/m²/day) |
|---|---|
| Phoenix, AZ | 6.1 |
| San Diego, CA | 5.2 |
| Las Vegas, NV | 6.7 |
| Panel Type | Average Efficiency (%) |
|---|---|
| Monocrystalline | 17-20 |
| Polycrystalline | 15-17 |
| Thin-film | 11-13 |
Expert Tips
- Consider your system’s degradation rate over time.
- Account for shading and soiling losses.
- Use high-quality panels for better efficiency.
- Check the NREL’s GIS Solar Maps for irradiation data in your area.
- Consult with a professional solar installer for accurate estimates.
Interactive FAQ
What is solar irradiation?
Solar irradiation is the amount of solar energy received per unit area, typically measured in kWh/m²/day.
How does array efficiency affect output?
Array efficiency determines how much of the received solar energy is converted into electricity. Higher efficiency panels produce more energy.